The Lens,narrow Field of Vision, cataloged under National Stock Number 1270-01-071-5665, is classified within Federal Supply Class 1270 (Aircraft Gunnery Fire Control Components) of the Fire Control Equipment group. The manufacturer of record is Rocky Mountain Instrument Co. Dba Rocky Mountain Instrument Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1270-01-071-5665 |
| Primary Part Number | 881603-1 |
| Item Name | Lens,narrow Field of Vision |
| FSC / FSG | 1270 / 12 — Aircraft Gunnery Fire Control Components |
| Manufacturer | Rocky Mountain Instrument Co. Dba Rocky Mountain Instrument Inc |
| Status | ACTIVE |
| General Characteristics Item Description | DIA,2.090 IN.;CENTER THICKNESS 0.150 IN.;CENTERING .0005 FIR;MATL,TI 1173,GRADE 1;COATING MLAR 204 AGAVGAN/AAQ-9,INFRARED DETECTING SET IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 881603-1 | Rocky Mountain Instrument Co. Dba Rocky Mountain Instrument Inc (USA) |
| Reference | Meaning |
|---|---|
| 881603-1 | 3/2 Design control — primary reference U.S. Government activity |
| 881603-1 | 5/9 Secondary reference Nu-Tek Precision Optical Corp. Dba Nu Tek Precision Optical Corp |
NSN 1270-01-071-5665 is a Lens,narrow Field of Vision, manufactured by Rocky Mountain Instrument Co. Dba Rocky Mountain Instrument Inc, classified under FSC 1270, Aircraft Gunnery Fire Control Components. Status: active.
NSN 1270-01-071-5665 has 1 manufacturer part number on file: 881603-1 (Rocky Mountain Instrument Co. Dba Rocky Mountain Instrument Inc).
Key specifications for 881603-1: General Characteristics Item Description: DIA,2.090 IN.;CENTER THICKNESS 0.150 IN.;CENTERING .0005 FIR;MATL,TI 1173,GRADE 1;COATING MLAR 204 AGAVGAN/AAQ-9,INFRARED DETECTING SET IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1270-01-071-5665 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.